sorry m8, there is no discussion possible about how much better a mastering will sound when donne properly by the right people at the right place. It's all they do in they're lives all they're lives, also they have a very objective hear whilst we are 2 attached 2 each and every sound so we tend 2 not take right decisions like leaving certain sounds out or very low in the mix or eq. a certain way.
Mind u we're not discussing price, mind u that I've talked about some1 how really knows what he is doing...
On the other hand we all want 2 learn and achieve the best result possible at the prodution stage.. but there is a very fine balance between making it a little better and overdoing it (ending up with a dead track! :( )
So what can u do 2 make yer sound better... first concentrate as much as u can on make yer sounds as correctly leveled as possible (ex. if we need a really loud kick most of times we over do it by about 6-8 dbs... try muting and unmuting 2 check levels)... keep and eye on yer VU and try lowering the levels of the most important sound in yer mix, use the mute 2 make sure u can hav' em lounder or lower with out losing the impact u want but also with out making it scream!! If u need go back and program the midi velocity, patterns etc.. so the sound level is more steady.
if u have a compressor on yer kicks (or other sounds), every time u have a break or some silent bits, play the sounds 1-2 bars b4 u want' em in the mix, but have the fader muted, now release the mute only when they should come in... this avoid the first sound which generally "overshoots" the comp (depending on the attack/ thresh/ ration settings of course)... try and have a very steady level on the overal mix, u can also overdrive the master a little bit 2 get some very very lite distortion/ limiting which will in a way kill some mad peaks and make yer track sound slightly sweeter...
hope this helps..
if u can't get a dat get a cd-r... MD is just no good!
Z